Warp beam



March 27, 1928.

J. R. SHUTT WARP BEAM Filed Feb. 25, 192,7

liter/(ey:

Patented Mar. l27, 1928.

incisa imi-ran S'IAriezs PATENT-OFFICE i ans-sa RAYMOND SHUTT, orwoRcEsTnn, MiissAOHUsnTTs, Assreivoiz` To CROMPTON' .i a KNOWLES LOOMWORKS, or WORCESTER; MAssaoHUsETTs'A CORPORATION OF ianssiioHUsiiT'iJs.dY

WARP BEAM.

Application filed ebiuary 25, 1927. Serial No. 170,984.

This invention relates to a warp beam capable oi" general use, butparticularly designed ior sillrlooms and for other looms using very tinewarp. found that any slight irregularity in the contour of the warp beamor any unevenness ,caused by the means for attachingthe warp theretowill produce defects in the cloth, which are readily apparent in thefinished fabric. 7

lt is the general Object of -iny invention to provide a warp beam havingan improved construction for attaching the ends of the warp threadsthereto. `A further Object is to provide meansby the use of which thewarp threads may be woven to a pointksubstaiitially closer to theeiid ofthe warp, thus reducing the warp waste.

My invention further relates to arrangenientsand combinations of partswhich Will be hereinafter described and more particu lai-ly pointed outin the appended claims. A preferred form of `the invention is shown inthe drawings in which Fig. 1 is a side elevation of my improved warpbeam; l m *5 2 is an enlarged partial sectional view, taken along theline 2--2 in Fig. 1;

Fig. 3 is an end view, looking in the direction of the arrow 3 inFig..2; Fig. 4 is a `sectional end elevation alongr the line 1 4 inFiga-12; Y

Fig. 5 is a partial sideA elevation of a slight niodiiication;

, taken Fig. 6 is a transverse sectional view, taken,

- along the line 6 6 in Fig. 2; and

Fi g. 7 is a diagrammatic view illustrating the utility ot my invention.

Referring to the drawings I have shown a Warp beam comprising atubularbarrel l0 having beam heads 11 clamped thereon and preferably adjustableto vary the width ot the warp. Friction pulleys 12 are mounted looselyron the beam shaft 13 and are providerL with hubs 14 to receive'andcenterthe ends of the barrel l0. A rope or belt (not shown) encii'cles eachfriction pulley 12 and is provided with a weight or other means 'forapplying the desired tension thereto.

A roll or drum is mounted on thebeam shaft 13 and is provided with slots21 to receive a cross pin 22 in the shaft 13 by which the roll may beturned angularly. Any other suitable means for securing the roll to theshaft may be substituted.

In such looms Vitis The roll 20is grooved or'cut away longitudinallyyasindicated at 24 fin Fig. 6, and a canvas or otherwise flexible apron 25is secured to the roll v20 in any convenientmannei', as by{passingjscrews 26 through` a doubled portion at the 'end ot thel fabricto secure it to the' .rollin the cut-away por,- tion 24. f

The` apron `'25 is `preferablysubdivided into a series of relativelynarrow strips,l

'mountedside by side along the barrel 20, each stripfbeing adapted toybe pulled Outward throughra slot 27 (Fig. 1) in the sideof the tubularbarrel 10. The outer end portion. of each strip: of the apron 25maybeprovided with eyelets28 4into which thevends of the warp threadsW'may be knotted..

After the warp'threads have been thus' attached to .the apron, awrenchor handle 30 (Fig.l 2) maybe applied to the squared end 31 of ythe beamshaft A13 and the shaft may be rotated to ,windthe apron around the roll20, drawing Athe saine graduallyinward until-the end of the-fabricapron'25 and the portions of the warpthreads knotted thereto have beendrawn'inside of the Outer barrel 10'. as indicated in Fig. 4.\

In order to hold the roll in this position, a ratchet plate 35 issecured to the end of the roll 2O and a holding pawl 36 is mounted on arod 37 rotatable in a bearing in one of the heads 12. A spring 38'fismounted on inglv engage the ratchet plate as indicated in Fi 4. A handle39 is secured to the outer end of the 'rod37 and constitutes rneansvbyVwhich'the pawl36 may be lifted to inopera- 1 tive position `for apurpose -to be described.

VThe pawl 36 is first released and moved from holding position by thehandle 377 and the canvas strips 25 are then unwound lby theelongated'slots 27. d The endsof the strips are then in convenientposit-ion for knotting the warp threads thereto. After all or" the warpltlireads'have been secured yto the-strips 25, the beam'shaft 13 is rotherod 37 and causes thepawl 36 to yieldd the handle 30 and Aare pulled outthrough i The regular. winding of the warp may then proceed and it willbe noted thatjthe tendency of the warp threads to fan out will causethem to be substantially equally spaced longitudinally of the warp beamat tlje points where they pass through the slots 2 During the winding ofthe warp beam and the subsequent weaving off of the greater portion ofthe warp, the canvas strips and the knots of warpr are retained withinthe barrel 10, which presents a smooth and substantially continuousouter surface.

' pass on their way to the'lease-rods 43 and harnesses44. ,The pawl 36is then released to reestablish normal relations between roll 20 andfriction pulleys 12, afterv which the pulleys aregiven a reversemovement suffi'- cient to restore the original tension of the warp.During this reverse movement the fabric 25 will be wound on the tubularbarrel 10 as suggested in Fig. 7 instead of on roll 20. Thereafterweaving will continue until the parts assume the position shown in Fig.7, thusv permittingthe use of a partV of the warp which would otherwisebe wasted.

It will further be-noticed ythat there are no attaching devices whateveroutside lof the warp beam barrel when the device is in normal operationand that the warp threads of silk or other fine material lay smoothlythereon and maybe drawn therefrom without producing irregularities inthe fabric.

There is, however, aV very slight difference in the circumference of thewarp beam measured around the beam and across one of the slots 27 whencompared with the distance 'measured around the uninterrupted surfacebetween the adjacent slots 27. The very slight difference between thechord and the arc is sufficient to vary the tension of the warp threadswhen a great number of fine layers are superposed.

1When extreme accuracy is desired, slots .50 (Fig. 5) in the barrel 5lare provided in a staggered relation in the barrel, with the endsofadjacent slots slightly overlapping and preferably of substantiallytriangular shape, as 'shown in Fig. `5. With this construction, it willbe seen that the amount of slot or opening crossed by each and everywarp thread is uniform and always equal to the full width of a singleslot, so that variations in warp length are avoided. Under ordinaryconditions. the formof my inven-v tion first described is sufficientlyvaccurate.

Not infrequently it occurs that the fabric to be woven is narrower thanlthe space between the opposite ends of the apron, but

advantages thereof, it will be seen that IV have provided awarp 'beamconstruction by which much improved results may be obtained in theweaving of silk or' rayon and other fine fabrics, and it'will beapparent that modifications may be made therein by those skilled in theart without departing sov from the scope of the invention as set forthin the claims. I do not wish to be otherwise limited tothe detailshereindisclosed, j

but what I claim is 1. A warp beam Ahaving a tubular outer barrel withan axially extended opening therein, a winding member rotatablymounted'within said barrel, a flexible warp-attaching member secured tosaid winding-member and' adapted to be drawn thereby through saidopening and within said tubular barrel, manually operated means toturnsaid win-ding member within said tubular barrel, a pawl and ratchetmechanism within said outer barrel effective to lhold said member frommovement in an unwinding direction but permitting free I. movement in awinding direction, and means external of said barrel for releasing saidpawl.

' 2. A warp beam having a tubular outer barrel provided with a series ofaxially extended slots separated by narrow supporting portions, a'winding member yrotatably mounted within said barrel, and a flexiblewarpattaching device secured to said'wind# ing member and comprising aseries ofseparate strips, eachstrip extending through one of said slotsand adapted to be drawn therethrough by said winding member.

3. In a warp beam, a hollow barrel presenting a primary winding surfacefor the warp, flexible attaching means for the warp, a roll locatedwithin the barrel and presenting a secondary winding. surface for theexible member, the vwinding surface of the roll being spaced from Vtheinner cylindrical surface of the barrel, and beam heads movable alongthe primary surface to vary the width of the warp space, the spacebetween the secondary winding surface and adjacent portions of the'barrel being sufliciently large to receive those portions of theflexible member whichlie beyond the warp space between the beam heads. y

In testimony whereof I have hereunto affixed my signature.

JESSE RAYMOND snn'rfi" l'lU

